Winding machine



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Patented Aug. 5, 1952 WINDING MACHINE John V. Keith, Warwick, R. I., assignor to Universal WindingCompany, Boston, Mass, a corporation of Massachusetts;

Application January 30, 1950, Serial No. 141,308

This invention relates to improvements in winding machines for packaging'yarn, thread and other strand-materials in the form of cops, cones and the like. Y 7 a In the present specification and claims the term yarn wherever used is to be interpreted in a general sense to apply to all types of attenuated material, and the'word package is intended to designate the wound mass of yarn whatever its form or shape.

The present invention relates more particularly to drum-winders,.so-called, in which the winding package is rotated by peripheral contact with a driving roll or drum, but itisto be understood that the improvements are applicable. to other types of winding machines.

One object of the invention is to provide improved means for controlling the relative movement between the core on which the package is wound and the driving drum as the winding package increases in diameter.

Another object is to provide control means operative duringthe movement of the packagecore as it recedes from the driving drum to stabilize such movement and prevent vibration or jumping of the winding package on the drum.

Another object is to provide control means operated frictionally to prevent undue movement of the movable part carrying the package-core in either direction as the core recedes from the driving drum.

I Another object is to provide control means in which the relative movement between a friction means and the element with which-it cooperates is multiplied to'increase the frictional resistance or damping effect. g

Another object is to provide a movable element and a spring-pressed plunger operative thereagainst and movable relative thereto with means actuated during the recession of the package-core from the driving drum to move said friction cooperating elements in opposite directions whereby to increase the frictional resistance therebetween.

Another object is to provide in a machine having a driving drum and a movable cradle for carrying the package-core to adapt it to recede from they driving drum, an element movable in one direction during the receding movement of the package-core and a second element frictionally engaging said first-named element and movable in the opposite direction during the receding movement of the core.

Further objects of the improvement are set forth in the following specificationwhich describes, a preferred form of construction of the 13 Claims. (Cl. 24218) 2 improved control means as illustrated by the accompanying drawings. In the drawings:

Fig. 1 is a side elevation of a portion of a winding machine showing the essential elements of the winding mechanism including a driving drum, a pivoted cradle for carrying the package-core and the present improved control means applied to use therewith with the parts shown at the start of the winding operation;

Fig. 2 is a similar side elevational view showing the relationship of the parts when apackage of considerable diameter has been wound on the core and the cradle carrying it moved relatively to the driving drum;

Fig, 3 is a plan view of the winding mechanism in reduced scale showing the friction control means and its connections with the cradle for carrying the package-core; and r Fig. 4 is a part-sectional detailed view showing the movable friction element and the springoperated plunger which is urged to bear thereagainst for applying resistance to the movement of the cradle during the recession of the packagecore from the driving drum.

For winding cops, cones and packages of considerable bulk the art comprises two types of mechanisms in general use: One, a machine comprising means for supporting a package for rotation, a driving drum for rotating the package by surface contact therewith, and means to adapt the core on which the package is wound to recede from the drum as the inding increases in diameter; and the other, a precision type of winding machine in which the package is wound on a core rotated bya positively-driven winding spindle and the yarn or other strand material is traversed longitudinally of the package by a reciprocating yarn-guide or other traversing means. In the first-mentioned type of drum winder means are sometimes provided for controlling the movement of the package-core away from the drum, and also the yarn-guide as the package builds up on the core; and in the second type, means are provided for controlling the separation between the package-core and the traversing yarn-guide, the guidebeing usually arranged to move away from the core during the growth in diameter of the package. In this latter instance such means may be in the form of a dogging device; for example, a pivoted dog engaging a quadrant concentric with the axis about which the yarn-guide swings or, other cases, a pawl engageable with teeth on an arcuate ratchetmember. Witheither of'such types of control means the movement of the package-core in one case, or the movement of the traversing yarnguide in the other instance, is checked in one direction only. That is, the package-core in one case, and the yarn-guide in the other case, is adapted to move freely in one direction during its recession and motion is checked in the opposite direction by the more or less positively-acting dogging-means. Y

With these previously-used dogging or checking devices it has been found in practice, especially in drum-driven winding machines, that when the package-core is forced outwardly away from the driving drum by irregularities in the winding, such as high spots on the surface,.. it-willbe held against returning into contact"withtl'ie drum and consequently the traction of the pack age on the drum is reduced. This may result in larities and'defecti'v'e winding.

To overcome the above nientio'ned "defects or deficiencies of previously-used controi devices in winding machinesthe present invention contemplatesirnpfove'd means .for damping "the movement of the cradle or'other part carrying the core on which the package fis'vviound to resist such movirierit in bdl'lh'dlfetio'ns. Through this improved control means a smoother and 'more uniform receding motion of the 'pac'kage core is effected "with substantially full driving contact of the package on the drum maintaine'd throughout the'winding 'of'the'fpaok'age from start to completion.

In the'pre'sent mbodifiient bfjthe invention the improved control means isiillustrated and described as applidto use,in a'windingrnechanism of conventionn 'type. Referring to the present drawings. the 'windingmechanism comprises a cylindrical driving drum"2mou'nted fast on a horizontal shaft'3 'whioh'is journaled in suitable bearings 4 and'iat'thejopposite sides of'the frameworkti of the machine. The drivin drum"? may be driven through any suitable conne'c'ticsnsana, "as 'herein"'shown, its shaft 3 carries a sprockefwh'elfl atone end" connected by a transmissidnchainfl to a suitable source of power "such 'as a line-shaft or the armature shaft of anelectric motor.

The winding'may be performed on any suitable rotatable arbor for supporting thepackage, for example/a hollow tube T suchas shown in Figs. 1 and 3'of the drawings. The package-core or tube T may be supported on a holder carried by a rotatable winding spindle or, as shown in the present drawings; the tube T'may be supported at its ends'by means of a pair of disks I and H inserted thereinto and journaled on suitablefriction reducingbearings. One disk I 0 is rotatably mounted on the end of a fixed spindle I2 held in a-bearing [3 at the end of an arm 14 forming a part of the yoke-shaped cradle 15. The opposite disk H is rotatably mounted ona spindle l6 held in a bearing I1 on the opposite arm of the cradle 15. The spindle l6 may be slidably mounted in the bearing I! and arranged to be operatedby a hand-lever 25 to insert the disk ll into the end of the tube'T for mounting the latter on the disks, or for removing it from the tube when the package is completed thereon; this particular part of the mechanism not being 4 herein shown or described in detail as it forms no part of the present invention.

The yoke-shaped cradle l5 has opposite bearing hubs l9, see Fig. 3, for pivotally mounting it on a horizontal shaft or rod which is fixedly held in bearings 2| and 22 formin a part of the framework 6 of the machine; thus providin for the receding movement of the package-core or tube T from the driving drum 2 as the package builds up on the tube.

The thread or yarn from which the package is wound is traversed longitudinally of the package-core or tube T by means of a reciprocating guideof conventional form. As herein shown, "theyarn-Jguid'e 30,.Figs. 1 and 2, is mounted on a horizontal tra .verse rod 3| carrying relatively flat guide plates 33 at its ends which slide on pairs-of grooved rollers 34 and 35 disposed in spaced relationship and rotatable on vertical studs 36 held in the framework 6. A cam or other usual type of mechanical motion is providedior reciprocating the traverse-bar 3| to cause the yarn-guide 30 to be oscillated -in "a horizontal path to'distribute the yarn;y inhelical coils on the cop-tube T in the manner common tomachines of-the present type.

Located rearwardly and-slightly below the rod '23 on which-the'cradle 154s pivoted-is a second horizontal rod 40 fixedly held in bearings and '42 and forming the mountingfor 'a-part 'of-the present friction-control or dogging device. A member which'forms one elementiof'thefriction-contrormeans is constitutedby a hub 44 surrounding the rod 40 and formed witha-radial plate-like portion 45 -'of semi-cylindrical outline as shownmost clearly in Figsj-zan'd' ffl. The hub 44 of the member 43 is free-to' turn'on therod and is held from longitudinal movement in one direction-by a collar46'abuttingits endand secured fast onthe rod'by "a-set-screw fl. A boss '48 extending radially from thehub '44 holds 'a rod 49 on the end of which is mounted a cylindrical weight 50. The rod 49 is fastened inthe boss -48 by means of a set-screw 5! and the weight "58 isfastened to'the'rod49 by means of a set-screw"52, see-Figx2, toadapt'it to-be ad- J'usted longitudinally of the rod to varyits;gravitational'effect. The-weight-.'iOtends torock the member -43 on"the"rod-4ll in contraclockwise direction and thereby somewhat;- counterbalance the weight of the cradle I5 and the package carried thereby during the recession of the package-corefromthe drum 2. The member'-43 is turnedor rctatedpositiv'ely on the rod '40 "by means of a linked connection" with the cradle I 5 arranged as next described.

Projecting downwardly from thecradle i5 is a bifurcatedarm 53, preferablyconstructed integral with the cradle-and formed with openings at v itsend for receivinga-cross-pin 54. A link formed with opposite bifurcatedendshas-one end, see Fig. 3; pivoted on -the-pin 54 while its opposite bifurcated end is 'pivotally-connecte'd by a pin"58 held in a pair of lugs Hand 60 projectingradiallyfrom the hub 44 of the -member'43.

Through this link connection the motion of the cradle 15 upwardly acts to rotate the member 43 incontraclockwise direction in-the'manner andfor the purpose later explained.

The plate-like portion 45- or the member 43 is formedat its extremi-ties wi-th bosses-6| and E2 in which are fixedly heldstop-pins 63 and 64. The pin 63 is adapted-to-engage a'flat face 65 formed on-an arm 66 of the cradle IS-to limitthe turning movement ofthe member 43 5 l and therebythe downward swinging movement of the cradle l5, 'its purpose being to prevent the core-supporting disks and H from'contacting with the surface of the driving drum 2 before the cop-tube T is placed on the disks or when removed therefrom in doifing the completed package. The opposite pin 64 is solocated as to adapt it to strike against a flat face 61 on the bottom of the arm 66 to limit the turning motion of the member 43 and thereby the movement of the cradle l5 when it is swung upwardly to a maximum extent.

The arm 66 forms a rigid part of the cradle l5and carries a spring-pressed plunger at its end which engages the machined. fiat face of the plate-portion 45 of the rotary member 43. For this purpose the arm' 66 is provided with a hub-portion H formed with a cylindrical bore 12 in which a plunger 10 is slidably mounted. A helical spring 15 pocketed in an axial bore in the plunger H! with its end bearing against a cross-pin It acts to slide the plunger to press its end against the face of the plate-portion 45 of the member 43, see Fig. 4. As a result of this construction the plunger Tl! by its frictional contact with the face of the plate-portion 45 of the member 43 acts to resist turning motion of the latter on the rod 40. Having now de' scribed the construction and arrangement of the various parts of the present improved control device its method of functioning during the winding operation of the 'machine is explained as follows: I

To prepare the machine for operation the bearing disk H is shifted to the left, as viewed in Fig. 3, by swinging the hand-lever 25 to cause it to slide the spindle 16 in its bearing [1. A cylindrical tube T of paper, fiber or the like may then be mounted in the cradle 15 by placing its right-hand end on the disk I0 and shifting the disk I! to force it into the opposite end of the tube. The strand of yarn y or other material is drawn up from its source of supply (not shown), threaded through the traversing guide 39 as indicated in Fig. 2, and its end attached to the tube T. The cradle I5 is then swung downwardly to place the periphery of the tube T in contact with the surface of the driving drum 2 to cause the tube to be driven therefrom. The driving drum 2 is usually continuously driven but in some cases may be controlled by a stop-motion to arrest its operation. As the tube T is rotated by the drum 2 the strand of yarn .y will be wound on the tube and traversed lengthwise thereof to 'de posit it in helical coils building up in layers to form the package P. As shown in Fig. 3, the package P may be wound with a gradually reduced extent of traverse to form it with tapered ends, this being a common practice in the winding art. As the yarn builds up on the tube T the increase in diameter of the mass will cause the cradle l5 to swing upwardly about the axis of the rod 2E3. During this movement of the cradle 15 its arm 53 will act through the link 55 to rotate the member 43 in contraclockwise direction, this action causing the face of the plate-portion 145 of the member toslide across the end of the plunger-pin 10. At the same time, the upward movement of the cradle [5 will cause its arm 66 to rock downwardly about the axis of the rod 20 to slide the plunger along the face of the plate-portion 45 of the member 43 in the opposite direction from that of said member. In this way the relative move-' ment between the plate-portion 45 of the member 43 and the plunger 10 is multiplied. Stated another way, the plate portion 45 of the member 43 not only moves across the end of the plungerpin 10, but an added motion is given by the movement of the plunger itself in the opposite direction along the face of the plate. Consequently, the effect of the friotionalengagement between. the plunger 10 and the face of the plate 45 is augmented to gain a mechanical advantage and provide'a more efiicient control of the swinging motion of the cradle l5 and thereby the receding movement of the core or coptube T carried by the cradle. During the upward (movement of the package-core and the contraolockwise turning. of the member 43, the counterbalance weight 50 will. swing away from its substantially neutral vertical position poised above the rod 40 and be carried downwardly as indicated in Fig. 2 whereby it serves to counterbalance the increasing weight of the package P being wound as the latter increases in bulk.

Due to the above arrangement and method of operation of the parts of the present improved device the recession of the package-core from the driving drum 2 is controlled to maintain the desired uniformity of motion and prevent vibration or bouncing of the package on the drum. Even though irregularities or high points on the surface of the winding package may occur to cause it to rise slightly away from the drum at intervals such rising or lifting motion will be checkedby the frictional resistance to the swinging movement of the cradle ['5 under the frictional action of the plunger"!!! against the plate-portion of the member 43. Likewise, should the package be momentarily lifted off the drum 2 it will be prevented from bounding back into sharp contact therewith to start vibration and bouncing motion thereof liable to engender a deleterious effect on the winding. Stated another way, the motion of the cradle l5 in either direction is resisted so that a much smoother and more uniform traction or driving contact is maintained between the periphery of the package and the surface of the driving drum. The winding operation continues until the package reaches its desired diameter when it may be removed from the machine by releasing the supporting disk II from one end of the tube T and slipping the tube off from the opposite disk ID.

It will be observed from the foregoing specification that the present invention provides an improved means in a winding machine for controlling the recession'of the package-core from the driving .drum during a winding operation to enhance the quality of the winding. While the invention is herein shown as applied to use in connection with a winding mechanism in which the package is driven by contact with a driveroll or drum, the same means may be applied to use with other types ,of machines in which the package is wound on a positively-driven winding spindle and the traversing yarn-guide recedes from the package-core.

While the invention is herein shown in a preferred form of construction, various modifications may be made in the structure and arrangement of the parts of the control device without departing from the spirit or scope of the invention as expressed in the following claims. Therefore, without limiting myself in this respect, I claim;

1. In a winding machine comprising means for s'upporting'awindin'g package, means for rotating the package, means for traversing yarn longitudinally' of the package, and means for mounting the package-supporting means for permittin relative movement between said package-supporting means and the traversing means, a movable element, friction means engaging said movable element, andmeans operated by the relative movement in either direction between the package-supporting means and the traversing means to cause'relative movement inv opposite directions between the friction means and the movable element.

2. In a winding machine having means for rotatably supporting a yarn-package, means for rotating the package, means for'traversing yarn on the package, and means for effective relative movement between the package supporting means and the traversing means, the combination therewith of an element movable by and with said movement in either direction between the package-supporting means and traversing means, frictionmeans engaging said last-named element, and means for moving said friction means along said element in the opposite direction from the movement of said'element.

3. In a winding machine, a package-core, a driving drum for rotating said package-core, means for traversing yarn on the core to form a package, means for mounting the packagecore to adapt it to recede from the driving drum during the growth in diameter of the package, an element movedby and with the movement of the package-core, a friction-plunger engageable with said element, and means to move said plunger relatively to said element in a direction opposite to that of the element by and with the receding movement of the package-core away from the driving drum during the winding of a package on said core.

4. In a winding machine comprising a driving drum, a package-core for rotation by said drum, means for traversing yarn on the core to form a package, means for mounting the package-core to adapt it to move relatively to the. driving drum during the growth of the package being woimd on the core, an element moved by and with the movement of the package-core relative to the driving; drum, friction-means engaging said element, and means for moving said friction means along the element which it engages during the movement of the package-core relative to the driving drum during the winding of a package on said core.

5. In a winding machine comprising a core for supporting a wound package, a driving drum for rotating the core to wind yarn thereon to form the package, means for permitting relative movement between said driving drum and core to adapt them to separate as the winding increases in diameter, a movable element, friction means engaging said movable element, and means actuated by the relative movement between said driving drum and core for moving said element inone direction and said friction-means in the opposite direction during the growth of the winding to re sist the relative movement between the. packagecore and driving drum. I

6. In a winding machine, the combination of a package-core, means for rotating said core to wind yarn thereon, means for traversing the yarn longitudinally of the core to form a package, means to permit relative movement between the package-core and traversing means during the winding of a package on said core, an element moved by the relative movement between the package-core and traversing means during the growth in the winding on' the core, friction means engaging said element to resist its movement in either direction, and means actuated by said relative movement between the package-core and traversing means for moving the friction means in the opposite direction from that of the movable element to augment the effect of the frictional resistance between the friction means and said movable element.

7. In a winding machine, the combination with a driving drum. a package-core, means to drive the drum to rotate said core, and means to traverse yarn on the core to form a package, said package-core and driving drum being relatively movable to separate as the package increases in diameter, of means for controlling the separation of the package-core and driving drum comprising resiliently-actuated friction means, a movable element engageable by said friction means, and means actuated by the relative movement between the package-core and driving drum for moving said friction means in one direction and said element in the opposite direction during winding of the package to multiply the effect of the frictional resistance between the movable element and the friction means.

8. In a winding machine, means for rotatably supporting a package-core, meansfor rotating said core, means for traversing yarn on the core to form a package, means for mounting the package-core to adapt it to move relatively to the traversing means during the growth of the package wound thereon, and means for controlling the movement of the package-core during the winding comprising a movable element, friction means engaging said movable element, and means operated by the movement of the package-core either toward or away from the traversing means toshift the movable element in one direction and thefriction means in the opposite direction to resist the movement of the packagecore and stabilize it in different positions.

9. In a winding machine, a packageeore, means for rotating said core, traversing means for distributing yarn on the core to form a package, means permitting relative movement between the package-core and traversing means as the winding package increases in diameter, and means for controlling said relative movement between the package-core and traversing means comprising a resiliently-actuated friction element, a movable element with which said friction element engages, and means actuated by the relative movement between the package-core and traversing means to move the friction element in one direction and the element with which it engages in the opposite direction to apply a mechanical advantage to the control'of the relative movement between the package-core and traversing means. I

10. In a winding machine having a driving drum, a package-core adapted to be rotated by said driving drum, means for traversing yarn on the core, and means to permit relative movement between the package-core and driving drum as the packageis wound on the core, the combination therewith of means for resisting the relative movement between the package-core and driving drum comprising a resiliently-actuated friction element, a movable element with which said friction element engages, and means operated by the relative movement between the package-core and traversing means to move the friction element in one direction and the element with which it engages in the opposite direction to gain a mechanical advantage in the cooperative action of said movable element and frictional means.

11. In a winding machine in combination with a package-core, driving means for rotating said core to wind a package thereon, and means for supporting the package-core to adapt it to move away from the driving means, a rotatable element, means connected to said core-supporting means for rotating said rotatable element during the movement of the package-core, a friction element engaging said rotatable element, and means actuated by and with the movement of the package-core for moving said friction element along the rotatable element in a direction opposite to the direction of rotation of said rotatable element.

12. In a winding machine comprising a package-core, a driving drum for rotating said core to wind a package thereon, and a cradle for supporting said package-core to adapt it to move away from the driving drum during the growth of the package being wound, the combination therewith of a rotatable element, means connecting the cradle to rotate said element during a the movement of the package-core relative to the driving drum, a friction element engaging said rotatable element, and means connecting the cradle to move the friction element on the rotatable element in a direction opposite to the direction of rotation of said rotatable element.

13. In a winding machine, a package-core, a driving drum for rotating said core to wind a package thereon, a pivoted cradle for supporting the package-core to adapt it to recede from the winding drum during the growth in the winding, an element pivoted to rotate on an axis parallel with the pivotal axis of the cradle, a friction plunger slidable in a bearing carried by the cradle, resilient means acting against the plunger to cause it to frictionally engage the rotary element, and means connecting said cradle to turn the rotary element in one direction and move the plunger in the opposite direction whereby their relative displacement is multiplied to secure a mechanical advantage in controlling the swinging movement of the cradle.

' JOHN V. KEITH.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,895,741 Swanson Jan. 31, 1933 2,243,678 McKean May 27, 1941 FOREIGN PATENTS Number Country Date 530,811 Great Britain Dec. 20, 1940 

